Duke Nukem 3D: Cheats, Guides, and Help Discussions

Game Details

Duke Nukem, the politically incorrect action hero and ultimate alien ass kicker, defends Earth and its babes from alien invasion in Duke Nukem 3D. This is the award winning game that helped define the FPS genre, introducing unparalleled interactivity, and a main character that spoke. Take the fight to the aliens across 39 levels featuring Hollywood, Los Angeles, a moon base, and alien spacecraft. Innovative items like the Jetpack, HoloDuke, Shrink Ray, or Pipe Bombs allow you to fight the aliens in any style you want. Defeat the aliens, so Duke can get back to some R&R with a stogie, a warm belly, and a bottle of Jack.

When you pick up a key card, you have access to all locked doors.
But if you decide not to use the key card in the level you first found it in, you may keep it and use it in a later level that you can't seem to find a key card in.
Don't forget!
When you start a new episode, you lose all key cards you may have previously collected.

Enable the "Cheat menu" code. Then at the main menu, press R, C-Right , Right, L, C-Left , Left, C-Right, Right in the NTSC version of the game. For the PAL version of the game, press R, C-Right, Down, L, C-Up, Left, C-Right, Left.

Enable the "Cheat menu" code. Then at the main menu, press R(7), Left in the NTSC version of the game. If you entered the code correctly, you will hear a sound. Now an option for invincibility will appear on the cheat menu. For the PAL version of the game, press R, C-Right, R, L, R(3), Left.

Enable the "Cheat menu" code. Then, press L, C-Left, Left, R, C-Right, Right, Left(2), Right in the NTSC version of the game. If you entered the code correctly, you will hear the sound of a siren. Now an option to toggle monsters on/off will appear on the cheat menu. For the PAL version of the game, press L, C-Up, Left, L, C-Down, R, L, R.

Start a game in co-op or deathmatch mode. Enable the "All items" code and the "Friendly Fire" option. Now have one player shoot the other player with the expander gun. Enable the "Invincibility" code before the first player explodes, then disable "Invincibility".

Start a game in co-op or deathmatch mode. Enable the "All items" code and the "Friendly Fire" option. Now have one player shoot the other player with the shrinker gun. Enable the "Invincibility" code, then disable "Invincibility".

Destroy any water source, including fountains, fire hydrants, and toilets. Then, stand in the water and hold A to slowly restore energy. Another way is, to stand in front of a toilet or urinal and press A.